多组分射流床中的射流深度  

THE JET PENETRATION DEPTH IN A FLUIDIZED BED OF MULTI-COMPONENT PARTICLES

作　　者：罗国华[1] 张济宇[1] 张碧江[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,太原030001

出　　处：《化工学报》1996年第1期91-99,共9页CIESC Journal

基　　金：国家自然科学基金

摘　　要：采用多路毕托管、电磁阀、微压传感器检测技术，考察了气固射流流化床中GeldartB、D类的单一物料及混合物的射流深度．指出物料的平均密度或粒径的增加都会造成射流深度的降低；得到的包括气团惯性准数在内的经验关联式能成功地预测多组分床层的射流深度．The jet penetration depth and gas velocity profiles were experimentally studied using a measurement system consisting of multi-Pitot-tube,mini-pressure transducer,and magnetic valves.It is found that the Potential core height of a jet for Geldart's B or D particles is much greater than that for Geldart's A particles and the jet penetration depth increases with the decrease of mean particle density and particle size for both monocomponent and binary mixtures.On the basis of the theoretical analysis,an semi-empirical equation including the modified Froude number and the Stokes number can be satisfactorily used to estimate the jet penetration depth in gas-solid jetted fluidized beds.

关 键 词：射流深度 混合物 射流流化床 流化床反应器 

分 类 号：TQ051.13[化学工程]